Season

Algorithm Analysis

Using a conditional statement, we output the season. Below are the months with numbers:

12, 1, and 2 – winter,
3, 4, and 5 – spring,
6, 7, and 8 – summer,
9, 10, and 11 – autumn.

Algorithm Implementation

Read the input data.

scanf("%d",&n);

Output the answer.

if ((n == 12) || (n == 1) || (n == 2))
    printf("Winter\n");
else if ((n >= 3) && (n <= 5))
    printf("Spring\n");
else if ((n >= 6) && (n <= 8))
    printf("Summer\n");
else
    printf("Autumn\n");

Algorithm Implementation – Optimal

Reduce the number of conditions.

#include <stdio.h>

int n;

int main(void)
{
    scanf("%d",&n);
    if ((n == 12) || (n == 1) || (n == 2)) printf("Winter\n");
    else if (n <= 5) printf("Spring\n");
    else if (n <= 8) printf("Summer\n");
    else printf("Autumn\n");
    return 0;
}

Algorithm Implementation – switch

#include <stdio.h>

int n;

int main(void)
{
    scanf("%d", &n);
    switch (n)
    {
        case 1:
        case 2:
        case 12:
            puts("Winter");
            break;
        case 3:
        case 4:
        case 5:
            puts("Spring");
            break;
        case 6:
        case 7:
        case 8:
            puts("Summer");
            break;
        default:
            puts("Autumn");
    }
    return 0;
}

Java Implementation

import java.util.*;

public class Main
{
    public static void main(String[] args)
    {
        Scanner con = new Scanner(System.in);
        int n = con.nextInt();
        if ((n == 12) || (n == 1) || (n == 2))
            System.out.println("Winter");
        else if ((n >= 3) && (n <= 5))
            System.out.println("Spring");
        else if ((n >= 6) && (n <= 8))
            System.out.println("Summer");
        else
            System.out.println("Autumn");
    }
}

Java Implementation – switch

import java.util.*;

public class Main
{
    public static void main(String[] args)
    {
        Scanner con = new Scanner(System.in);
        int n = con.nextInt();
        switch (n)
        {
            case 1:
            case 2:
            case 12:
                System.out.println("Winter");
                break;
            case 3:
            case 4:
            case 5:
                System.out.println("Spring");
                break;
            case 6:
            case 7:
            case 8:
                System.out.println("Summer");
                break;
            default:
                System.out.println("Autumn");
        }
        con.close();
    }
}